<script setup lang="ts" name="Cart">
import Message from '@/components/XtxMessage';
import useStore from '@/store';
import { useRouter } from 'vue-router';

const { cart } = useStore()

const del = async (id: string) => {
  await cart.delCart([id])
  Message.success('删除成功')
}

const router = useRouter()

const changeSelected = (selected: boolean, skuId: string) => {
  console.log(selected, skuId)
  // 调用接口
  cart.updateCart(skuId, {selected} )
}

const changeNum = (num: number, skuId: string) => {
  // 调用接口
  cart.updateCart(skuId, {count: num} )
}

// 切换是否全选
const changeAllSelected = (selected: boolean) => {
  console.log(selected)
  // 调用接口
  cart.updateCartAllSelected(selected)
}

// 用户点击下单结算
const checkout = () => {
  // 检查是否选中商品
  if(cart.selectedNum === 0){
    Message.error('请选中商品')
    return
  }

  // 跳转到结算页面
  router.push('/member/checkout')
}
</script>

<template>
  <div class="xtx-cart-page">
    <div class="container">
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem>购物车</XtxBreadItem>
      </XtxBread>
      <div class="cart">
        <template v-if="cart.effectiveList.length">
          <table >
            <thead>
              <tr>
                <th width="120">
                  <XtxCheckbox 
                  :model-value="cart.isSelectedAll" 
                  @update:model-value="changeAllSelected">全选</XtxCheckbox>
                </th>
                <th width="400">商品信息</th>
                <th width="220">单价</th>
                <th width="180">数量</th>
                <th width="180">小计</th>
                <th width="140">操作</th>
              </tr>
            </thead>
            <!-- 有效商品 -->
            <tbody>
              <tr v-for="item in cart.effectiveList" :key="item.id">
                <td>
                  <!-- <XtxCheckbox v-model="item.selected"/> -->
                  <XtxCheckbox 
                  :model-value="item.selected" 
                  @update:model-value="(selected)=>changeSelected(selected,item.skuId)"/>
                  <!-- <XtxCheckbox 
                  :model-value="item.selected" 
                  @update:model-value="changeSelected"/> -->
                </td>
                <td>
                  <div class="goods">
                    <RouterLink to="/">
                      <img
                        :src="item.picture"
                        alt=""
                      />
                    </RouterLink>
                    <div>
                      <p class="name ellipsis">
                        {{item.name}}
                      </p>
                      <p class="attr">{{item.attrsText}}</p>
                    </div>
                  </div>
                </td>
                <td class="tc">
                  <p>&yen;{{item.nowPrice}}</p>
                </td>
                <td class="tc">
                  <!-- 在模块中，写事件回调函数时，有一个特殊名字的参数:$event
                  它表示当前事件发生时，接收的实参 -->
                  <!-- :model-value="item.count" @update:model-value="(num) => changeNum(num, item.skuId)"> -->
                  <XtxNumber 
                  :max="item.stock"
                  :model-value="item.count" @update:model-value="changeNum($event, item.skuId)"/>
                </td>
                <td class="tc"><p class="f16 red">&yen;{{(item.count * +item.nowPrice).toFixed(2)}}</p></td>
                <td class="tc">
                  <p><a href="javascript:;">移入收藏夹</a></p>
                  <p><a class="green" href="javascript:;" @click="del(item.skuId)">删除</a></p>
                  <p><a href="javascript:;">找相似</a></p>
                </td>
              </tr>
            </tbody>
          </table>  
          <!-- 操作栏 -->
          <div class="action">
            <div class="batch"></div>
            <div class="total">
              共 {{cart.effectiveListCounts}} 件有效商品，已选择 {{cart.selectedNum}}件，商品合计：
              <span class="red">¥{{cart.selectedListPrice.toFixed(2)}}</span>
              <XtxButton type="primary" @click="checkout">下单结算</XtxButton>
            </div>
          </div>
        </template>
        <!-- 删除光购物车之后使用元素占位 -->
        <div v-else class="cart-none" style="text-align: center">
          <img src="@/assets/images/none.png" alt="" />
          <p>购物车内暂时没有商品</p>
          <div class="btn" style="margin: 20px">
            <XtxButton size="small" type="primary" @click="router.push('/')"> 继续逛逛 </XtxButton>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<style scoped lang="less">
.cart-none{
  padding: 50px;
}
.tc {
  text-align: center;
  .xtx-numbox {
    margin: 0 auto;
    width: 120px;
  }
}
.red {
  color: @priceColor;
}
.green {
  color: @xtxColor;
}
.f16 {
  font-size: 16px;
}
.goods {
  display: flex;
  align-items: center;
  img {
    width: 100px;
    height: 100px;
  }
  > div {
    width: 280px;
    font-size: 16px;
    padding-left: 10px;
    .attr {
      font-size: 14px;
      color: #999;
    }
  }
}
.action {
  display: flex;
  background: #fff;
  margin-top: 20px;
  height: 80px;
  align-items: center;
  font-size: 16px;
  justify-content: space-between;
  padding: 0 30px;
  .xtx-checkbox {
    color: #999;
  }
  .batch {
    a {
      margin-left: 20px;
    }
  }
  .red {
    font-size: 18px;
    margin-right: 20px;
    font-weight: bold;
  }
}
.tit {
  color: #666;
  font-size: 16px;
  font-weight: normal;
  line-height: 50px;
}
.xtx-cart-page {
  .cart {
    background: #fff;
    color: #666;
    table {
      border-spacing: 0;
      border-collapse: collapse;
      line-height: 24px;
      th,
      td {
        padding: 10px;
        border-bottom: 1px solid #f5f5f5;
        &:first-child {
          text-align: left;
          padding-left: 30px;
          color: #999;
        }
      }
      th {
        font-size: 16px;
        font-weight: normal;
        line-height: 50px;
      }
    }
  }
}
</style>